Software
Houzz Logo Print
rggarden

Bayer Tree and Shrub Insect Control- When to Apply?

19 years ago

I bought the Bayer systematic insect control. My question is- should I wait to apply it until the trees and shrubs start growing, or should I apply it right now to be sure that it has enough time to get through the entire plant before the pests start up? If I apply it right now, will the roots still suck it in and carry it through the plant? Thanks in advance.

Comments (10)

  • 19 years ago

    If those directions are not provided, you could call the toll free number on the label. Be prepared to tell them in what part of the world you live.

  • 19 years ago

    What insects are you trying to control? There may be a less toxic alternative. I always wait to see if the problem arises before I treat for it. Theresa.

  • 19 years ago

    I'm interested to know if you're doing this for Japanese Beetles. If you call Bayer, let us know the response.

  • 19 years ago

    I may be wrong, but I would think you would want to wait until the sap was flowing thru the entire tree/shrub which would be evidenced by new growth/buds? Even though roots might be growing the rest of the plant is dormant.

  • 19 years ago

    I am applying it mainly for two pests- aphids and japanese beetles. I know that the aphids come out sooner than the japanese beetles. Also, can I apply it to my Arrowwood Viburnums to help control the japanese beetles? They were all over them last year, but I don't want to hurt the birds who eat the berries. Can I apply it to by blueberry bushes? I don't want the blueberries to have poison in them. Thanks

  • 19 years ago

    Well, according to the website you can apply it anytime of the year as long as the ground is not frozen or waterlogged but they state fall is the best time for control of aphids. The only fruit/nut trees they have listed as safe to use on are: Apple, Crabapple, Loquat, Mayhew, Oriental Pear, Pear, Pecan and Quince.

    I don't get how it is safe on those since it moves into every portion of the plant even new growth. So the fruit MUST take up some of the poison? Not sure I'd want it in anything wildlife or myself would ingest. Would not the flowers and nectar also take it up making it toxic to bees?
    Click on the FAQ tab on the link below:

    Here is a link that might be useful: Bayer Advanced Tree & Shrub Insect Control Concentrate

  • 19 years ago

    I don't want to harm the birds, bees or beneficial insects (NWF Certified Backyard Habitat) -- I knocked the beetles off by hand every morning during the bad season. I have a large garden, but they mostly went after my roses and weeping cherry.

  • 19 years ago

    Aphids are easily controled with soapy water and Japanese beetles are annoying but their drama is short lived. I try to keep my yard in balance using integrated pest management. Encourage the good and they will usually take care of the bad. You will have to learn to live with some damage but it's a small trade off to know that the bees, butterflies and yourself are not harmed. Theresa (a beekeeper).

  • 7 years ago

    I have a very tall Pine Tree, 88 inches around, infested with Japanese Beetles. No signs of dead branches ... yet. At 1/4 cup/1 inch of circumference of the Bayer granules, that makes basically 20 cups of granules. I live in the Sacramento Region of Calif. where it typically freezes rarely and briefly. It's 55F now. Will Bayer be able to cure such a big tree and are 20 cups really necessary? Susan.